A farmer is giving his wife last-minute instructions before heading to
town to do chores.

"That fellow from Sematol will be along this afternoon to inseminate
one of the cows. I've hung a nail by the right stall so you'll
know which one I want him to impregnate."

Satisfied that his wife could understand the instructions, the farmer
left for town.

That afternoon, the 'Inseminator' arrives, and the wife dutifully takes
him
out to the barn and directly to the stall with the nail.

"This is the cow right here," she tells him.

"What's the nail for?" the guy asks.

She replies, "I guess it's to hang up your pants."